https://www.youtube.com/watch?v=SuCS08eF2EI&feature=youtube
I've been having this issue on a server I play. Where my blocks just don't place. I've been using these settings on this server for ages and they've suddenly just stopped working. No one else on the server seems to be having the same issues as me and I don't know how to fix it. I've used different versions of schematica, uninstalled and re installed it. Switched versions of Minecraft forge from 1.12 to 1.8.9 to 1.8 and it does it on all of them.
